All other players of records, differ greatly from the juke box. The reason is its shear capacity, the juke box has the ability to play up to 300 discs.
In the juke box the coin placed in the slot passes the coin-tester to check that it is of genuine value. The coin then frees the selector mechanism so the user can make their choice. This is done by pressing down the required keys, which in turn causes a micro-switch to activate a magnet (there is one for every key combination). This magnet then moves a contact on the pre-selector unit. The pre-selector's function is to `count' downwards through the pile of records, until the correct one is chosen. The unused records fall down the stacker column, where they are stored until they are requested. In modern jukeboxes the micro switch and magnet are replaced by a micro-computer which controls a robot arm like selector which fetches and loads the records.
The Americans were the first to produce juke boxes in the early 1930's. These musical devices did not become popular in Great Britain until after the Second World War. The interest and desire for the juke box then soared, and even today many public houses and bars feature the juke box in one form or another.
